These are on my musa bajoo and it's leaves are wilting. They feel like a tiny mass of spider webs. The same things can be seen on my emerald eunymous and it is dying too. My manihot esculenta just dies as well and had got spider mites.

There is not enough visible in the photo to be able to tell what you are seeing. They don't look like spider mites to me, but I cannot be sure.

Whatever is causing your plants to wilt or decline, it is not caused by pests. Plant pests are attracted to plants that are under stress for other reasons, such as improper light or watering. That is where your focus needs to be. You could well eradicate all pests and still lose the plant.

Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
I now have a book available on indoor plant care